The Roentgen rays in medicine and surgery as an aid in diagnosis and as a therapeutic agent : designed for the use of practitioners and students (1901)
Williams, Francis H. (Francis Henry), 1852-1936 · New York, Macmillan · leaf 70
e not intense enough when they escape through the opening in X-RAY EQUIPMENT 39 the diaphragm to seriously injure the definition. The second cathodeis never connected with the generator until the first used cathode is soexhausted of gas that the resistance of the tube is too high, then it maytake… … Fig. 32. Double focus tube for high frequency coils. (Rollins.) The cathode streams are represented by dotted lines, the X-rays by full lines. There are twocathode streams, and consequently two sources from which X-rays arise. This double source of lightis a defect of the type. The cooled target…
Radiography · X-rays
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